function createAjaxRequest() {
	var request = null;
	if(window.XMLHttpRequest) {
		try {
			request = new XMLHttpRequest();
		} catch(e) {
			request = null;
		}
	} else if(window.ActiveXObject) {
		try {
			request = new ActiveXObject("Msxm12.XMLHTTP");
		} catch(e) {
			try {
				request = new ActiveXObject("Microsoft.XMLHTTP");
			} catch(e) {
				request = null;
			}
		}
	}
	return request;
}


